Crack repair · cost
Foundation crack repair cost
Most foundation cracks cost $250–$800 each to repair — but the real question is whether a crack is cosmetic or a warning sign. Estimate the job below, then learn how to tell the difference.
Estimate only — not a structural diagnosis. Get a licensed engineer's inspection before authorizing work.
What you’re actually paying for
Crack repair pricing is driven by the number of cracks, the method, and whether the crack is structural. Sealing a single hairline crack against moisture is cheap; injecting a structural crack with epoxy and adding carbon-fiber reinforcement is several times more. The calculator prices per crack so you can match it to what you actually see.
Repair methods and what they cost
The catch: cracks are often a symptom
A crack is sometimes just a crack — but it’s often the visible sign of movement underneath: settlement, heave, or hydrostatic pressure. Injecting the crack without addressing the cause means it comes back. That’s why a structural engineer’s inspection (about $350–$1,000) is money well spent before you pay for repairs — it tells you whether you’re fixing a crack or a foundation.
Frequently asked questions
How much does it cost to fix a foundation crack?
A single crack typically runs $250–$800 to seal or inject. Cosmetic hairline cracks sit at the low end; structural cracks that need epoxy or polyurethane injection — sometimes with carbon-fiber reinforcement — run higher. Several cracks, or cracks that signal underlying settlement, push the total up quickly.
Epoxy vs. polyurethane injection — what’s the difference?
Epoxy is rigid and bonds the concrete back to structural strength, so it’s used for structural cracks in poured walls. Polyurethane stays flexible and expands to seal against water, so it’s the choice for leaking, non-structural cracks. A pro picks based on whether the crack is structural and whether it’s actively leaking.
Can I repair a foundation crack myself?
DIY crack-injection kits exist for $50–$150 and can work on minor, non-structural hairline cracks. But if the crack is horizontal, wider than about ¼ inch, stair-stepped, or growing, that signals movement — get a structural engineer rather than caulking over a symptom.
When is a foundation crack serious?
Vertical hairline cracks are usually cosmetic. Horizontal cracks, stair-step cracks in block, cracks wider than ¼ inch, offsets where one side is higher, and sticking doors or windows are warning signs of structural movement that warrant an inspection.
Sources & methodology
- Foundation repair cost data — Angi (national average ≈ $5,000; range ≈ $2,200–$8,100)
- Foundation repair cost data — Bob Vila (citing Angi)
- Foundation repair cost & insurance — NerdWallet
- A licensed structural engineer / foundation contractor in your area — the authoritative source for diagnosis, scope, and a stamped repair plan
Estimates compiled from the sources above and standard cost models — not engineering, professional, insurance, or legal advice, and may not reflect your policy or local prices. See our full methodology and disclaimer.